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Finding the Fourth Proportional to 68,373.36, 102,539.88 and 28,929.60

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Solution

The fourth proportional to 68,373.36, 102,539.88 and 28,929.60 is: 43,385.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,373.36 : 102,539.88 = 28,929.60 : x
  2. Step 2: Convert to fraction form
    68,373.36/102,539.88 = 28,929.60/x
  3. Step 3: Cross multiply
    68,373.36x = 102,539.88 × 28,929.60
  4. Step 4: Simplify right side
    68,373.36x = 2,966,437,712.45
  5. Step 5: Solve for x
    x = 2,966,437,712.45/68,373.36
  6. Step 6: Final answer
    x = 43,385.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.